Advertising in Japan: The Channel Set and What It Costs

Most European companies arrive in Japan with a media plan that works everywhere else and discover it does not work here. The instinct is to blame the channel. Usually the channel is fine.

This guide covers what the Japanese advertising market actually looks like, which channels carry the money, what localising creative genuinely involves, and how to judge a media partner. Every figure traces to a named source, and the deeper treatments live in the linked articles below.

How big is advertising in Japan, and where is the money moving

Japanese advertising expenditure reached 8,062.3 billion yen in 2025, up 5.1% year on year and a record high. That comes from Dentsu's annual Advertising Expenditures in Japan report, published on 5 March 2026, which has tracked this market since 1947 and is the reference series everyone in Japanese media planning uses.

Inside that total, 2025 was a crossover year:

Segment	2025 expenditure	Year-on-year
Internet advertising	4,045.9 billion yen	+10.8%
Traditional media	2,298.0 billion yen	-1.6%
Promotional media	1,718.4 billion yen	+2.0%
Total	8,062.3 billion yen	+5.1%

Internet advertising passed 4,000 billion yen for the first time and, also for the first time, accounted for more than half of all advertising expenditure in Japan, at 50.2%.

That single number is the one to hold onto, because it contradicts the story many European companies still carry about Japan: that it is a conservative market where traditional media rules and digital is a supplement. It stopped being true, and the direction of travel is not subtle. Internet advertising grew 10.8% while traditional media shrank.

The growth inside digital is concentrated, according to Dentsu's detailed internet advertising analysis published the same day:

Format	2025 expenditure	Year-on-year
Social advertising	1,306.7 billion yen	+18.7%
Video advertising	1,027.5 billion yen	+21.8%

Video splits almost evenly between instream at 524.6 billion yen (51.1%) and outstream at 502.9 billion yen (48.9%). Social splits into SNS at 550.8 billion yen (42.1%), video sharing at 512.6 billion yen (39.2%), and other formats at 243.4 billion yen (18.6%).

Two structural facts sit underneath those numbers and shape how you buy. Performance-based paid search alone accounts for 38.7% of internet advertising media expenditure. And 84.6% of video advertising spend is performance-based. This is not a market that buys impressions on faith. It buys measurable outcomes, which means your measurement has to be credible before your media plan is.

Dentsu forecasts internet advertising media expenditure at 3,584.0 billion yen in 2026, up 8.3% from 3,309.3 billion yen in 2025.

The channel set, and why it does not map to Europe

The most common planning error is assuming the Japanese channel set is the European one with different logos. It is not.

Paid search is the workhorse, and Japan has a genuinely two-engine search market rather than the single-engine market most of Europe runs. How search behaves here, including Yahoo Japan's continuing share and how generative results are changing the picture, is covered in search engines in Japan and in the practical treatment at SEO in Japan.

LINE has no European equivalent, which is exactly why it gets underweighted. It is a messaging platform, a payments rail and an advertising surface at once, and it sits inside LY Corporation alongside Yahoo Japan. The consequence for an advertiser is that a large share of Japanese attention and first-party data is reachable through one buying relationship that your European media agency probably does not hold. The detail is in LINE for business in Japan.

Social behaves differently by platform in ways that will surprise anyone reasoning from European norms. X carries far more weight in Japan than its European position suggests, and Facebook occupies a specific and durable B2B role. Both are covered in X and Twitter intelligence for Japan B2B and Facebook for B2B in Japan. The wider picture, with platform-level user figures sourced to DataReportal, is in Japan social media statistics and social media marketing in Japan.

LinkedIn is the trap. European B2B marketers reach for it first and find it thin, because the professional networking layer in Japan runs through different rails. The corridor-specific treatment is in LinkedIn B2B advertising across Asia and LinkedIn advertising for international B2B.

Television and above-the-line still matter for national brand launches, and they carry cost structures and buying conventions that catch foreign advertisers out. That is the subject of above-the-line advertising in Japan.

Webinars function as a demand-generation channel with their own Japanese conventions around registration, follow-up and what counts as a qualified attendee. See webinar marketing in Japan.

What localisation actually involves

Here is the failure pattern, and it is almost universal. A European company translates its best-performing creative, runs it on a correctly chosen Japanese channel, sees weak results, and concludes the channel does not work for their category.

The channel worked. The creative was carrying assumptions that did not survive the border.

Advertising conventions differ between markets in ways that are measurable rather than impressionistic. Marieke de Mooij's work on cross-cultural advertising, which maps Hofstede's dimensions onto consumer behaviour and advertising effectiveness, documents systematic differences in how directly a claim can be made, how much explanation an audience expects before acting, and what kinds of evidence read as trustworthy. Japan sits at a position on those dimensions that makes several standard European advertising moves actively counterproductive: the direct comparative claim, the confident single-benefit headline, the short landing page that assumes the reader will fill in the gaps.

We treat this as a testable question rather than a matter of taste. The evidence on how cultural values move advertising performance is collected in cultural values and ad performance, and the broader framing is in cross-cultural marketing.

In practice, localisation for a Japanese campaign means four things, and the first is the one most often skipped:

1. Creative made for the market, not translated into it. Same strategy, locally built execution. This is a budget line, not an afterthought.
2. A Japanese-language landing page that carries the evidence a Japanese buyer expects before they will act. Company details, specifics, and enough substance that the page does not feel like a brochure. A campaign judged on click-through rate will hide a landing page that is failing.
3. Trust signals that are legible locally. What signals credibility in Amsterdam does not automatically signal it in Tokyo.
4. A buying cycle assumption that matches reality. Japanese B2B decisions move through consensus before they move through a pipeline, which means a campaign optimised for immediate response will misread its own results. The mechanism is explained in nemawashi and Japanese decision-making.

How to judge the results

Because Japanese digital buying is overwhelmingly performance-based, measurement discipline is not optional, and the standard European dashboard will mislead you in one specific way.

Click-through rate tells you whether the creative earned attention. It tells you almost nothing about whether the campaign will produce business, because the drop-off in a Japanese funnel typically happens after the click, on a landing page that has not given a Japanese buyer enough to proceed. Judge a first campaign on post-click behaviour: time on page, depth, form completion, and what actually enters the pipeline.

Set the decision rules before the campaign runs. What result justifies scaling, what justifies changing the creative, and what justifies leaving the channel. Deciding this afterwards is how companies end up concluding that Japan does not work, when what they learned was that one execution did not.

The longer-horizon problem is that Japanese customer relationships fail quietly rather than loudly, which distorts retention measurement in ways covered in silent churn and Japanese customer retention.

Choosing who runs it

There are five workable routes, and the honest answer is that the right one depends on your budget and how much internal capacity you have.

Route	Works when	Breaks when
One full-service partner covering everything	You want a single accountable relationship and lack internal media capacity	Nobody internally can judge the work, so quality drifts unchecked
Several specialist agencies by channel	You have real budget and internal coordination capacity	Coordination cost exceeds the specialist gain
A local marketing hire in Japan	You are committed to the market for years, not quarters	You need results before a hire can be recruited and onboarded
An international agency with a Japan practice	You need one contract, European-side accountability, and Japan-side execution	The Japan practice turns out to be a translation desk
A market-entry specialist	You are early, and the media question sits inside a bigger entry question	You are past entry and need scale execution

The question that separates a real Japan practice from a translation desk is simple, and worth asking directly: who makes the creative, and where do they live? A partner who plans in English and translates into Japanese produces the failure pattern described above. A partner who builds creative in market does not.

Silkdrive sits in the fourth and fifth rows. We are European-side accountable, based in Den Haag, and we work the EU-Japan corridor in both directions. If you want to see how we approach it, the Japan digital marketing and paid search advertising pages set out the method, and social media advertising covers the paid social side.

Where to go next

If you are still deciding whether to enter the market at all, start with the Japan market entry guide rather than a media plan. If you have entered and need the demand-generation layer, B2B marketing in Japan is the closer fit. If your question is specifically about being found rather than buying attention, go to SEO in Japan.